hemodynamics
Pronunciation: HEE-mo-dy-NAM-iks
The study of blood flow and the forces involved in circulation, particularly pressures and flow measurements during cardiac procedures.
Full Definition
Hemodynamics in cardiac surgery refers to the measurement and analysis of blood flow, pressure, and resistance within the cardiovascular system. Key parameters include cardiac output, systemic vascular resistance, pulmonary vascular resistance, and various chamber pressures. During cardiac procedures, continuous hemodynamic monitoring guides fluid management, vasoactive medication dosing, and assessment of cardiac function. Swan-Ganz catheters, arterial lines, and echocardiography provide real-time hemodynamic data. Understanding hemodynamic principles is crucial for perioperative management and recognizing complications such as low cardiac output syndrome or right heart failure.
Usage
Usage note: Use singular form; distinguish from individual hemodynamic parameters like cardiac output.
In Context
- "Hemodynamic monitoring revealed elevated pulmonary pressures consistent with right heart dysfunction." — ICU progress note
- "Optimization of hemodynamics required careful fluid balance and inotropic support." — Post-operative management note